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ogrwarpedlayer.h
1 /******************************************************************************
2 * $Id$
3 *
4 * Project: OpenGIS Simple Features Reference Implementation
5 * Purpose: Defines OGRWarpedLayer class
6 * Author: Even Rouault, even dot rouault at mines dash paris dot org
7 *
8 ******************************************************************************
9 * Copyright (c) 2012-2014, Even Rouault <even dot rouault at mines-paris dot org>
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining a
12 * copy of this software and associated documentation files (the "Software"),
13 * to deal in the Software without restriction, including without limitation
14 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15 * and/or sell copies of the Software, and to permit persons to whom the
16 * Software is furnished to do so, subject to the following conditions:
17 *
18 * The above copyright notice and this permission notice shall be included
19 * in all copies or substantial portions of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
24 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
26 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
27 * DEALINGS IN THE SOFTWARE.
28 ****************************************************************************/
29
30 #ifndef OGRWARPEDLAYER_H_INCLUDED
31 #define OGRWARPEDLAYER_H_INCLUDED
32
33 #ifndef DOXYGEN_SKIP
34
35 #include "ogrlayerdecorator.h"
36
37 /************************************************************************/
38 /* OGRWarpedLayer */
39 /************************************************************************/
40
41 class OGRWarpedLayer : public OGRLayerDecorator
42 {
43 protected:
44 OGRFeatureDefn *m_poFeatureDefn;
45 int m_iGeomField;
46
47 OGRCoordinateTransformation *m_poCT;
48 OGRCoordinateTransformation *m_poReversedCT; /* may be NULL */
49 OGRSpatialReference *m_poSRS;
50
51 OGREnvelope sStaticEnvelope;
52
53 static int ReprojectEnvelope( OGREnvelope* psEnvelope,
54 OGRCoordinateTransformation* poCT );
55
56 OGRFeature * SrcFeatureToWarpedFeature(OGRFeature* poFeature);
57 OGRFeature * WarpedFeatureToSrcFeature(OGRFeature* poFeature);
58
59 public:
60
61 OGRWarpedLayer(OGRLayer* poDecoratedLayer,
62 int iGeomField,
63 int bTakeOwnership,
64 OGRCoordinateTransformation* poCT, /* must NOT be NULL, ownership acquired by OGRWarpedLayer */
65 OGRCoordinateTransformation* poReversedCT /* may be NULL, ownership acquired by OGRWarpedLayer */);
66 virtual ~OGRWarpedLayer();
67
68 void SetExtent(double dfXMin, double dfYMin, double dfXMax, double dfYMax);
69
70 virtual void SetSpatialFilter( OGRGeometry * ) override;
71 virtual void SetSpatialFilterRect( double dfMinX, double dfMinY,
72 double dfMaxX, double dfMaxY ) override;
73 virtual void SetSpatialFilter( int iGeomField, OGRGeometry * ) override;
74 virtual void SetSpatialFilterRect( int iGeomField, double dfMinX, double dfMinY,
75 double dfMaxX, double dfMaxY ) override;
76
77 virtual OGRFeature *GetNextFeature() override;
78 virtual OGRFeature *GetFeature( GIntBig nFID ) override;
79 virtual OGRErr ISetFeature( OGRFeature *poFeature ) override;
80 virtual OGRErr ICreateFeature( OGRFeature *poFeature ) override;
81
82 virtual OGRFeatureDefn *GetLayerDefn() override;
83
84 virtual OGRSpatialReference *GetSpatialRef() override;
85
86 virtual GIntBig GetFeatureCount( int bForce = TRUE ) override;
87 virtual OGRErr GetExtent(int iGeomField, OGREnvelope *psExtent, int bForce = TRUE) override;
88 virtual OGRErr GetExtent(OGREnvelope *psExtent, int bForce = TRUE) override;
89
90 virtual int TestCapability( const char * ) override;
91 };
92
93 #endif /* #ifndef DOXYGEN_SKIP */
94
95 #endif // OGRWARPEDLAYER_H_INCLUDED
OGRFeatureDefn
Definition of a feature class or feature layer.
Definition: ogr_feature.h:259
OGRGeometry
Abstract base class for all geometry classes.
Definition: ogr_geometry.h:286
OGRSpatialReference
This class represents an OpenGIS Spatial Reference System, and contains methods for converting betwee...
Definition: ogr_spatialref.h:139
OGRLayer
This class represents a layer of simple features, with access methods.
Definition: ogrsf_frmts.h:70
OGRCoordinateTransformation
Interface for transforming between coordinate systems.
Definition: ogr_spatialref.h:636
OGRFeature
A simple feature, including geometry and attributes.
Definition: ogr_feature.h:353
GIntBig
long long GIntBig
Large signed integer type (generally 64-bit integer type).
Definition: cpl_port.h:246
OGRErr
int OGRErr
Simple container for a bounding region.
Definition: ogr_core.h:290

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